package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * 订单
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    /**
     * 用户下单
     *
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //异常情况的处理（收货地址为空、购物车为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);

        //查询当前用户的购物车数据
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //构造订单数据
        Orders order = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,order);
        order.setPhone(addressBook.getPhone());
        order.setAddress(addressBook.getDetail());
        order.setConsignee(addressBook.getConsignee());
        order.setNumber(String.valueOf(System.currentTimeMillis()));
        order.setUserId(userId);
        order.setUserName(userMapper.getName(userId));
        order.setStatus(Orders.PENDING_PAYMENT);
        order.setPayStatus(Orders.UN_PAID);
        order.setOrderTime(LocalDateTime.now());

        //向订单表插入1条数据
        orderMapper.insert(order);

        //订单明细数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(order.getId());
            orderDetailList.add(orderDetail);
        }

        //向明细表插入n条数据
        orderDetailMapper.insertBatch(orderDetailList);

        //清理购物车中的数据
        shoppingCartMapper.deleteByUserId(userId);

        //封装返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(order.getId())
                .orderNumber(order.getNumber())
                .orderAmount(order.getAmount())
                .orderTime(order.getOrderTime())
                .build();

        return orderSubmitVO;
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
//
//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }

        JSONObject jsonObject = new JSONObject();
        jsonObject.put("code", "SUCCESS");
        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));
        Integer OrderPaidStatus = Orders.PAID;
        Integer OrderStatus = Orders.TO_BE_CONFIRMED;
        LocalDateTime payTime = LocalDateTime.now();
        String orderNumber = ordersPaymentDTO.getOrderNumber();
        orderMapper.update1(OrderPaidStatus,OrderStatus,payTime,orderNumber);
        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
    }

    @Override
    public PageResult search(OrdersPageQueryDTO ordersPageQueryDTO) {
        ordersPageQueryDTO.setPage(ordersPageQueryDTO.getPageSize()*(ordersPageQueryDTO.getPage()-1));
        PageResult pageResult = new PageResult();
        pageResult.setTotal(orderMapper.count());
        pageResult.setRecords(orderMapper.pageQuery(ordersPageQueryDTO));
        List<Orders> records = pageResult.getRecords();
        List<OrderDishVO> orderDishVOList = new ArrayList<>();
        for(Orders orders:records){
            orders.setAddress(new String(addressBookMapper.getProvince(orders.getAddressBookId()))
                    +new String(addressBookMapper.getProvince(orders.getAddressBookId()))
                    + new String(addressBookMapper.getDistrict(orders.getAddressBookId()))
                    +new String(addressBookMapper.getDetail(orders.getAddressBookId())));
            OrderDishVO ordersDishVO = new OrderDishVO();
            BeanUtils.copyProperties(orders, ordersDishVO);
            List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
            StringBuilder orderDishBuilder = new StringBuilder();
            for (OrderDetail orderDetail : orderDetailList) {
                orderDishBuilder.append(orderDetail.getName()).append(" x ").append(orderDetail.getNumber()).append(" ");
            }
            ordersDishVO.setOrderDishes(orderDishBuilder.toString());
            orderDishVOList.add(ordersDishVO);
        }
        pageResult.setRecords(orderDishVOList);
        return pageResult;
    }

    // ... existing code ...
    @Override
    public OrderVO getById(Long id) {
        Orders orders = orderMapper.getById(id);
        // 获取地址簿信息
        AddressBook addressBook = addressBookMapper.getById(orders.getAddressBookId());
        if (addressBook != null) {
            StringBuilder addressBuilder = new StringBuilder();
            if (addressBook.getProvinceName() != null) {
                addressBuilder.append(addressBook.getProvinceName());
            }
            if (addressBook.getCityName() != null) {
                addressBuilder.append(addressBook.getCityName());
            }
            if (addressBook.getDistrictName() != null) {
                addressBuilder.append(addressBook.getDistrictName());
            }
            if (addressBook.getDetail() != null) {
                addressBuilder.append(addressBook.getDetail());
            }
            orders.setAddress(addressBuilder.toString());
        }
        OrderDishVO ordersDishVO = new OrderDishVO();
        BeanUtils.copyProperties(orders, ordersDishVO);
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        StringBuilder orderDishBuilder = new StringBuilder();
        for (OrderDetail orderDetail : orderDetailList) {
            orderDishBuilder.append(orderDetail.getName()).append(" x ").append(orderDetail.getNumber()).append(" ");
        }
        ordersDishVO.setOrderDishes(orderDishBuilder.toString());
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
    }

    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        orderMapper.rejection(ordersRejectionDTO);
    }

    @Override
    public PageResult pageHistoryQuery(Integer page, Integer pageSize, Integer status) {
        PageResult pageResult = new PageResult();
        pageResult.setTotal(orderMapper.countById(BaseContext.getCurrentId()));
        pageResult.setRecords(orderMapper.pageQueryById((Integer)(page-1)*pageSize, pageSize, status));
        List<OrderVO> orderVOList = pageResult.getRecords();
        for (OrderVO orderVO : orderVOList) {
            Long orderId = orderVO.getId();
            orderVO.setOrderDetailList(orderDetailMapper.getByOrderId(orderId));
        }
        pageResult.setRecords(orderVOList);
        return pageResult;
    }

    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        ordersConfirmDTO.setStatus(Orders.CONFIRMED);
        orderMapper.ConfirmOrder(ordersConfirmDTO);
    }

    @Override
    public void deliver(Long id) {
        orderMapper.deliver(id);
    }

    @Override
    public void complete(Long id) {
        orderMapper.complete(id);
    }

    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
        orderMapper.cancel(ordersCancelDTO);
    }

    @Override
    public OrderStatisticsVO statistics() {
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(orderMapper.countNumber(2));
        orderStatisticsVO.setConfirmed(orderMapper.countNumber(3));
        orderStatisticsVO.setDeliveryInProgress(orderMapper.countNumber(4));
        return orderStatisticsVO;
    }

    @Override
    public void cancelById(Long id) {
        orderMapper.cancelById(id,"客户取消订单");
    }

// ... existing code ...


}
